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| author | Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> | 2018-01-18 17:50:43 -0800 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-20 22:59:06 +1100 |
| commit | c5cc1f4df6b16646f8fae7aab523c1820bf916e8 (patch) | |
| tree | 83164522643b8dc08f2825b3c7643f88cc74f0b5 /arch/powerpc/include/asm/pkeys.h | |
| parent | 99cd1302327a2ccaedf905e9f6a8d8fd234bd485 (diff) | |
| download | lwn-c5cc1f4df6b16646f8fae7aab523c1820bf916e8.tar.gz lwn-c5cc1f4df6b16646f8fae7aab523c1820bf916e8.zip | |
powerpc/ptrace: Add memory protection key regset
The AMR/IAMR/UAMOR are part of the program context.
Allow it to be accessed via ptrace and through core files.
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/pkeys.h')
| -rw-r--r-- | arch/powerpc/include/asm/pkeys.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pkeys.h b/arch/powerpc/include/asm/pkeys.h index 2298771b066b..c3cbad824e5a 100644 --- a/arch/powerpc/include/asm/pkeys.h +++ b/arch/powerpc/include/asm/pkeys.h @@ -202,6 +202,11 @@ static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, return __arch_set_user_pkey_access(tsk, pkey, init_val); } +static inline bool arch_pkeys_enabled(void) +{ + return !static_branch_likely(&pkey_disabled); +} + extern void pkey_mm_init(struct mm_struct *mm); extern void thread_pkey_regs_save(struct thread_struct *thread); extern void thread_pkey_regs_restore(struct thread_struct *new_thread, |